Where do barcode lookups come from?

From a product database queried by the scanned number — Open Food Facts is a free, openly licensed option with good coverage of packaged groceries. Always allow manual entry as a fallback, because coverage varies by country and fresh produce has no barcode at all. A scanner with no manual path is unusable in a real kitchen.

How do I keep notifications from being annoying?

Batch them. One daily notification saying "3 items expire in the next 2 days" is useful; six separate alerts get the app muted, and a muted app is a deleted app. Let the user choose the lead time and the hour, and never notify about an item they have already marked used.

How to Build a Pantry Expiry Tracker App with AI (2026)

What a pantry expiry tracker app needs

Barcode scan to add items with name prefilled
Smart expiry defaults by category, editable
Use-it-first list sorted by days remaining
Expiry notifications a few days ahead
Shared household pantry

The screens

Screen	What it does
Pantry	Items grouped by location, colour-coded by days remaining
Add Item	Scan or search, quantity, location, expiry with a default
Use It Up	Expiring soonest first, with mark-used and mark-wasted
Insights	What gets wasted most, estimated money lost per month
Household	Invite members, shared pantry settings

The data model

Item: name, barcode, categoryId, quantity, unit, location (fridge | freezer | pantry), expiresOn, householdId
Category: name, defaultShelfLifeDays, storageHint
UsageEvent: itemId, type (used | wasted | discarded), quantity, occurredAt
Household: name, inviteCode
Member: householdId, userId, role

The build prompt (copy this)

Paste this into ShipNative and it becomes a working React Native app with these screens, navigable in a live preview, in about two minutes:

“A pantry expiry tracker for a household. Adding an item is the critical path: scan a barcode with the camera to prefill the name and category, or search by name, then the app suggests an expiry date from the category’s typical shelf life and storage location so the user usually just taps confirm. The pantry screen groups items by fridge, freezer, and pantry, colour-coded by days remaining. A "use it up" screen lists what expires soonest with two actions per item — used or wasted — and those actions feed an insights screen showing which categories get wasted most and a rough monthly cost of that waste. Local notifications fire a configurable number of days before expiry, batched into one daily notification rather than one per item. A household can be shared by invite code so partners see the same pantry and one person’s update is reflected for everyone. Screens: Pantry, Add Item, Use It Up, Insights, Household.”

Then iterate with small, screen-specific prompts (“make the primary button bigger”, “add an empty state”), preview on your own phone, and export the full Expo project whenever you want. The full method: how to build an app with AI.

How it makes money

Subscription ($2-4/mo) for household sharing, unlimited items, and the waste insights, with a solo pantry free. The insights screen is the honest hook — showing someone they threw away roughly forty dollars of food last month is a far stronger upgrade argument than a feature list. Retention is the real risk: most people stop logging after a fortnight, so measure week-four retention before investing further.

Implementation and the revenue math for every model: how to make money from an app. When you’re ready to ship: App Store and Google Play publishing guides.

Build it now

The prompt above is free to run at shipnative.dev — working pantry expiry tracker app on your phone today, full code export, no credit card.

How to Build a Pantry Expiry Tracker App with AI